Alphabetize profiles, change how the profiles page is structured

I think if the profiles page is structured this way (essentially in two columns) it makes better use of the space on the page.  There is still room for people to write a little blurb about themselves, but it feels like the amount of vertical scrolling on the page is reduced.

I also moved the shared/_profile partial into the profiles directory instead, and am rendering it with render partial.  I like the syntax, since it is literally what we want ('render this partial') but am curious what you guys think of it.